import 'package:flutter/foundation.dart'; import 'package:flutter/widgets.dart'; class LifecycleEventHandler extends WidgetsBindingObserver { final AsyncCallback? resumeCallBack; final AsyncCallback? suspendingCallBack; LifecycleEventHandler({ this.resumeCallBack, this.suspendingCallBack, }); @override Future didChangeAppLifecycleState(AppLifecycleState state) async { switch (state) { case AppLifecycleState.resumed: if (resumeCallBack != null) { await resumeCallBack!(); } break; case AppLifecycleState.inactive: case AppLifecycleState.hidden: case AppLifecycleState.paused: case AppLifecycleState.detached: if (suspendingCallBack != null) { await suspendingCallBack!(); } break; } } }